Review on Neoteck Portable 3.5Mm Headphone Amplifier With Bluetooth 5.0 Receiver, Two-Stage Gain Switch, 16-150 Ohm HiFi Earphone Amp, Aluminum Matte Surface by Rich Shankar

Received it as a birthday gift and for the longest time made my headphones sound better (even my vintage ones) but this is my second one from the non-BT version that I've had to fail on me. The first one I had the charge in slot came off circuit board making it useless after it died. The second one which is the BT amp I still have now makes the sound play on one side of my headphones because the volume nob when turned on/off puts so much stress on the soldering contacts making it fail over time. I tried contacting the company through ebay's message system to see if they can send a replacement and a week or two later received absolutely nothing back. Do yourself a favor and save up for a better portable BT headphone amp.